Integrated small township sewage treatment equipment maintenance

Integrated small township sewage treatment equipment maintenance

The cost of sewage treatment equipment in sewage treatment plants mainly includes energy consumption cost, agent consumption cost, overhaul cost, cost, sludge disposal cost, cost, personnel cost, cost, and other costs (this article only discusses the relevant direct costs of sewage treatment cost, excluding fixed asset depreciation, financial cost, etc.). How to establish reasonable sewage treatment costs based on specific situations and effectively control costs, so as to reduce various consumption and minimize treatment costs, is not only beneficial for the healthy development of the sewage treatment industry, but also an urgent need faced by the urban sewage treatment industry. Based on practical work experience and relevant materials, the author has conducted a preliminary exploration of the cost composition of sewage treatment plants.

The sewage that has undergone rough treatment in the septic tank flows through coarse and fine grids to remove large particles and fibrous impurities, and then enters the hydrolysis regulation tank to regulate the water quality and quantity of the sewage. At the same time, under the action of hydrolysis bacteria, solids are hydrolyzed into solubility, and non degradable substances are hydrolyzed into easily degradable substances. The hydraulic retention time of the hydrolysis regulating tank is 9 hours. After anaerobic treatment, the sewage is pumped into a biological oxidation tank with a total hydraulic retention time of 3 hours and an air-water ratio of 10:1. Biological oxidation tank is a biological treatment device that mainly uses biofilm method and also has activated sludge method. It provides oxygen source through jet aerator, and the organic matter in the device is adsorbed and degraded by special microorganisms to purify water quality. Advanced DSTE type biological treatment equipment is installed in the oxidation tank, which has two treatment units for hypoxia and aerobic. It is pre inoculated with H special engineering microorganisms and has the ability to adapt to dissolved oxygen, greatly improving the treatment efficiency and shock load resistance of the oxidation tank. The oxidation tank adopts a novel elastic packing material with a large specific surface area, which does not cause the biofilm to form pellets. The water distribution pipe of the aerobic tank adopts perforated pipes for water distribution, and the air distribution pipe adopts microporous aeration pipes. This device has the characteristics of fine bubbles, high oxygen utilization rate, and uniform water and air distribution. After oxidation treatment, the mixed solution flows into a two-stage sedimentation tank with a total hydraulic retention time of 1 hour. The sedimentation adopts vertical flow sedimentation and flows into a clean water tank with a hydraulic retention time of 1.5 hours. A chemical chlorine dioxide liquid generator is used to produce chlorine dioxide liquid on site with high efficiency and reliability. After purification, the sewage is directly discharged through a chemical discharge outlet with a metering weir. Due to the use of biological fillers and microbial technology in this process, no residual sludge is generated during sewage treatment, no sludge is discharged outside, and no secondary pollution is generated.

Integrated small township sewage treatment equipment maintenance